Adaptive power saving for a mobile subscriber unit in a wireless communication network
AssigneeMotorola Solutions, Inc.
InventorsOhad Shatil, Yungang Wang, Win NuNu Win
Life of this patent
Estimating the term…
Abstract
A method and apparatus for adaptive power saving for a mobile subscriber unit in a wireless communication network includes receiving beacons from an access point, measuring timing periods between received beacons, determining a delay in timing periods, and associating the delay in timing periods to a change in a quality of a communication link. The link quality can be quantified and used for reconfiguring power-save parameters in response to a change in link quality.
Claims16
A method for classifying Radio Frequency communication link quality by a mobile subscriber unit in a wireless local area communication network, the method comprising the steps of:
- sampling a portion of beacons transmitted from an access point;
- measuring a change in timing periods between received beacons by determining a difference between an actual reception time of a beacon and a scheduled reception time from a previous beacon as TBTTcurrent beacon=MODULUS(number=TSFprevious beacon, divisor=BIprevious beacon), where TBTT is Target Beacon Transmission Time, TSF is Time Synchronization Function field in the sampled beacon, and BI is the configured Beacon Interval;
- determining a measurement accuracy classification of the communication link quality based on the change in timing periods TBTTcurrent beacon;
- and
- reconfiguring sampling based on the accuracy classification.
A mobile subscriber unit adapted for classifying Radio Frequency communication link quality in a wireless communication network, the mobile subscriber unit comprising:
- a memory operable to be configured a classification of the communication link quality based on beacon timing period changes;
- a transceiver operable to sample portions of beacons transmitted from an access point;
- and
- a processor coupled to the memory and transceiver, the processor operable to measure a change in timing periods between received beacons by determining a difference between an actual reception time of a beacon and a scheduled reception time from a previous beacon as TBTTcurrent beacon=MODULUS(number=TSFprevious beacon, divisor=BIprevious beacon), where TBTT is Target Beacon Transmission Time, TSF is Time Synchronization Function field in the sampled beacon, and BI is the configured Beacon Interval, determine a measurement accuracy classification of the communication link quality based on the change in timing periods TBTTcurrent beacon, and reconfiguring sampling based on the accuracy classification.
Dependencies are inferred from the claim text.